IT985230B - Apparecchio automatico di foca lizzazione per proiettori - Google Patents

Apparecchio automatico di foca lizzazione per proiettori

Info

Publication number
IT985230B
IT985230B IT50282/73A IT5028273A IT985230B IT 985230 B IT985230 B IT 985230B IT 50282/73 A IT50282/73 A IT 50282/73A IT 5028273 A IT5028273 A IT 5028273A IT 985230 B IT985230 B IT 985230B
Authority
IT
Italy
Prior art keywords
foca
projectors
automatic
lization
lization device
Prior art date
Application number
IT50282/73A
Other languages
English (en)
Original Assignee
Agfa Gevaert Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agfa Gevaert Ag filed Critical Agfa Gevaert Ag
Application granted granted Critical
Publication of IT985230B publication Critical patent/IT985230B/it

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
IT50282/73A 1972-05-27 1973-05-29 Apparecchio automatico di foca lizzazione per proiettori IT985230B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2225972A DE2225972A1 (de) 1972-05-27 1972-05-27 Automatische fokussiervorrichtung

Publications (1)

Publication Number Publication Date
IT985230B true IT985230B (it) 1974-11-30

Family

ID=5846136

Family Applications (1)

Application Number Title Priority Date Filing Date
IT50282/73A IT985230B (it) 1972-05-27 1973-05-29 Apparecchio automatico di foca lizzazione per proiettori

Country Status (5)

Country Link
US (1) US3864033A (it)
CH (1) CH549815A (it)
DE (1) DE2225972A1 (it)
FR (1) FR2187129A5 (it)
IT (1) IT985230B (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4540278A (en) * 1979-04-02 1985-09-10 Optimetrix Corporation Optical focusing system
JPS5696203A (en) * 1979-12-27 1981-08-04 Fujitsu Ltd Detection device for optical position
FR2504281A1 (fr) * 1981-04-16 1982-10-22 Euromask Appareil de projection a dispositif de mise au point
DE3120816A1 (de) * 1981-05-25 1982-12-23 Kindermann & Co Gmbh, 8703 Ochsenfurt "verfahren und vorrichtung zur automatischen scharfeinstellung fuer bildwerfer, zum beispiel diaprojektoren"
DD159377A1 (de) * 1981-05-28 1983-03-02 Reiner Hesse Anordnung zur positionierung
JP3380754B2 (ja) * 1997-10-17 2003-02-24 富士写真フイルム株式会社 原稿キャリア及び画像読取装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3264935A (en) * 1964-01-06 1966-08-09 Robert W Vose Self-focusing slide projector
US3649113A (en) * 1969-12-04 1972-03-14 Eastman Kodak Co Projector mechanism for maintaining the film area projected on a screen preferably in focus and of a predetermined size
US3639048A (en) * 1970-07-23 1972-02-01 Eastman Kodak Co Automatic ranging and focusing projector

Also Published As

Publication number Publication date
CH549815A (de) 1974-05-31
US3864033A (en) 1975-02-04
DE2225972A1 (de) 1973-12-13
FR2187129A5 (it) 1974-01-11

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